Ecoflap is designed to stop draughts and heat loss through the letterbox. It is designed for horizontal letter boxes and automatically adjusts to the size of the delivery. It will fit anything from a Victorian door to an over standard size, taking less than five minutes to fit. It can be screwed or adhered, its light weight, and has no components. Extremley robost and a fantastic energy saving gadget. Finely balanced, the closing force will oppose the draft attempting to blow the letterflap open.
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